Argentine import Marcos Flores is impressing the Adelaide United hierarchy with his recent performances in the Asian Champions League.

The 24-year old attacking midfielder has been vital in both of the Reds ACL group stage wins so far and coach Aurelio Vidmar was singing his praises this week and can only see things getting better for the former Union de Santa Fe man.

“He's very good, we saw that in the first half - he's played two or three decent balls into the front third which were quite clinical," Vidmar said.

"He probably gave a bit too much time on the ball, but he's that type of player who can see a lot of different pictures and if you've got the right players making the right runs, then we're always going to be dangerous.

"So we've been pretty pleased with him, and he'll get better.

“He's probably not as match-hardened as he should be, but with a few more games he should be fine," added Vidmar.

"Probably after another two or three weeks he should be able to finish off 90 minutes.

"He was a little bit closer against Shandong, but it was a really quick tempo, so he was always going to struggle a little bit physically towards the end of the game, but we understand that and he'll get better."

Adelaide have so far taken out reigning Asian champions Pohang Steelers 1-0 and Chinese club Shandong Luneng 2-0 away in the ACL and sit at the top of Group H.